Function Blink

packages/react-query/src/__tests__/utils.tsx:25–43

({
  duration,
  children,
}: {
  duration: number
  children: React.ReactNode
})

}

export function Blink({
  duration,
  children,
}: {
  duration: number
  children: React.ReactNode
}) {
  const [shouldShow, setShouldShow] = React.useState<boolean>(true)

  React.useEffect(() => {
    setShouldShow(true)
    const timeout = setActTimeout(() => setShouldShow(false), duration)
    return () => {
      clearTimeout(timeout)
    }
  }, [duration, children])

  return shouldShow ? <>{children}</> : <>off</>
}

export function mockOnlineManagerIsOnline(
  value: boolean,